From: Ville Syrjälä <ville.syrj...@linux.intel.com>

intel_dp_supports_dsc() now works for MST as well, reuse it.

Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c     |  4 ++--
 drivers/gpu/drm/i915/display/intel_dp.h     |  3 +++
 drivers/gpu/drm/i915/display/intel_dp_mst.c | 20 ++++----------------
 3 files changed, 9 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c 
b/drivers/gpu/drm/i915/display/intel_dp.c
index 6dfde22e5f9d..a15ef6c015c8 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1459,8 +1459,8 @@ bool intel_dp_supports_fec(struct intel_dp *intel_dp,
                drm_dp_sink_supports_fec(connector->dp.fec_capability);
 }
 
-static bool intel_dp_supports_dsc(struct intel_connector *connector,
-                                 const struct intel_crtc_state *crtc_state)
+bool intel_dp_supports_dsc(struct intel_connector *connector,
+                          const struct intel_crtc_state *crtc_state)
 {
        if (!intel_dp_has_dsc(connector))
                return false;
diff --git a/drivers/gpu/drm/i915/display/intel_dp.h 
b/drivers/gpu/drm/i915/display/intel_dp.h
index c0d3e315559e..f1d90fc458d9 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.h
+++ b/drivers/gpu/drm/i915/display/intel_dp.h
@@ -170,6 +170,9 @@ bool intel_dp_supports_fec(struct intel_dp *intel_dp,
                           const struct intel_connector *connector,
                           const struct intel_crtc_state *pipe_config);
 
+bool intel_dp_supports_dsc(struct intel_connector *connector,
+                          const struct intel_crtc_state *crtc_state);
+
 u32 intel_dp_dsc_nearest_valid_bpp(struct drm_i915_private *i915, u32 bpp, u32 
pipe_bpp);
 
 void intel_ddi_update_pipe(struct intel_atomic_state *state,
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c 
b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index b57753d2d82c..4a624c826604 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -400,18 +400,6 @@ static int intel_dp_mst_update_slots(struct intel_encoder 
*encoder,
        return 0;
 }
 
-static bool
-intel_dp_mst_dsc_source_support(const struct intel_crtc_state *crtc_state)
-{
-       struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
-
-       /*
-        * FIXME: Enabling DSC on ICL results in blank screen and FIFO pipe /
-        * transcoder underruns, re-enable DSC after fixing this issue.
-        */
-       return DISPLAY_VER(i915) >= 12 && intel_dsc_source_support(crtc_state);
-}
-
 static int mode_hblank_period_ns(const struct drm_display_mode *mode)
 {
        return DIV_ROUND_CLOSEST_ULL(mul_u32_u32(mode->htotal - mode->hdisplay,
@@ -443,7 +431,7 @@ hblank_expansion_quirk_needs_dsc(const struct 
intel_connector *connector,
 }
 
 static bool
-adjust_limits_for_dsc_hblank_expansion_quirk(const struct intel_connector 
*connector,
+adjust_limits_for_dsc_hblank_expansion_quirk(struct intel_connector *connector,
                                             const struct intel_crtc_state 
*crtc_state,
                                             struct link_config_limits *limits,
                                             bool dsc)
@@ -456,7 +444,7 @@ adjust_limits_for_dsc_hblank_expansion_quirk(const struct 
intel_connector *conne
                return true;
 
        if (!dsc) {
-               if (intel_dp_mst_dsc_source_support(crtc_state)) {
+               if (intel_dp_supports_dsc(connector, crtc_state)) {
                        drm_dbg_kms(&i915->drm,
                                    "[CRTC:%d:%s][CONNECTOR:%d:%s] DSC needed 
by hblank expansion quirk\n",
                                    crtc->base.base.id, crtc->base.name,
@@ -503,7 +491,7 @@ adjust_limits_for_dsc_hblank_expansion_quirk(const struct 
intel_connector *conne
 
 static bool
 intel_dp_mst_compute_config_limits(struct intel_dp *intel_dp,
-                                  const struct intel_connector *connector,
+                                  struct intel_connector *connector,
                                   struct intel_crtc_state *crtc_state,
                                   bool dsc,
                                   struct link_config_limits *limits)
@@ -602,7 +590,7 @@ static int intel_dp_mst_compute_config(struct intel_encoder 
*encoder,
                            str_yes_no(ret), str_yes_no(joiner_needs_dsc),
                            str_yes_no(intel_dp->force_dsc_en));
 
-               if (!intel_dp_mst_dsc_source_support(pipe_config))
+               if (!intel_dp_supports_dsc(connector, pipe_config))
                        return -EINVAL;
 
                if (!intel_dp_mst_compute_config_limits(intel_dp,
-- 
2.44.1

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